Greeting
We were established in December 2023 as a regionally-based, global KPO* company with the support of Nagasaki Prefecture, Nagasaki City, the Fukuoka Financial Group, and the Juhachi-Shinwa Bank.
We've started out with a staff of roughly 20 people, handling Singapore head office operations on consignment for the ONE container company.
Our starting members are leading us as we set our company on a steady trajectory and build up our capabilities as a KPO company. At the same time, we are focusing on human resource development, such as establishing career paths for our ONE head office. Our goal is to expand to a company with several hundred staff members, providing contracted services to companies both inside Japan and abroad.
(*KPO: Knowledge Process Offshoring. This consists of outsourcing high-level knowledge processes, and requires high-level abilities and specialized knowledge in areas such as investigation and analysis.)
There are three main reasons that we established our company in Nagasaki.
① The close affinity between maritime industry and the culture of Nagasaki, which has developed through the years, starting with Dejima
② The presence of eight universities, sources of high quality human resources
③ The bonds we have established with the people of Nagasaki through various events.
Attracted by features such as this, we chose to make Nagasaki our home.
We aren't a company that simply performs fixed, predefined operations. Instead, we're always keeping our eyes and ears open, gathering new information and expertise and polishing our own skills so that we can constantly take on new challenges. We see the success of our clients as our own success, so we are working to elevate the level of our services and provide new proposals to our clients. Of course, there are limits to what we can do on our own. That's why we plan to leverage the strengths of Nagasaki Prefecture, Nagasaki City, its universities, and our partners to realize our vision.
Our name, "ONE DEJIMA," is not simply a combination of "ONE," our shareholding company, and "Dejima," the region where we are based. ONE also represents uniting diverse abilities and people around the world so that we can leverage their exceptional strengths. DEJIMA represents our dedication to taking a step outside of convention, which is how Nagasaki's Dejima area secured its place in history. Our name reflects our dream, that even the smallest company can take its place on the massive global stage.
Our mission is "Empowering global business from Nagasaki." The new initiatives we're implementing will spread to other cities and bring new life to all of Japan. All of our employees and stakeholders are working together as one to make this a regionally-based global company that will generate this positive feedback cycle. You won't want to miss what we have in store.
Representative Director and President
Naoto Toyama

Management

ONE DEJIMA Corporation
Representative Director and President
Naoto Toyama
Biography
Naoto Toyama commenced his professional journey at Isuzu Motors in 1997, spearheading the implementation of SAP across its global subsidiaries. In 2005, he moved to Mitsui O.S.K. Lines, where he played a pivotal role in the 2016 integration of Ocean Network Express (ONE). After resigning from Mitsui O.S.K. in December 2023, Toyama joined ONE in January 2024 and relocated to Nagasaki City in April. More than nine years of his extensive international experience in Thailand, Hong Kong, and Singapore have equipped him with a deep understanding of global business operations.
ONE DEJIMA Corporation
Representative Senior Managing Director
Yoshio Kosasa
Biography
Yoshio Kosasa embarked on his banking career at The Eighteenth Bank in 1989. Having progressed through key managerial roles, including branch manager positions in Kaizu, Togitsu, and Omura, he was appointed the Head of the Loan Department in April 2018 and subsequently promoted to an Executive Officer and General Manager of the Head Office in April 2020, playing a vital role in the merger with Fukuoka Financial Group. He then served as the Executive Officer and General Manager of the Head Office and Nagasaki Business Promotion Division of The Juhachi-Shinwa Bank from September 2020 before assuming the position of Director and Audit Committee member in March 2022. In April 2024, he joined ONE DEJIMA Co., Ltd. as the Senior Managing Director.
Movie
1st Anniversary Edition
ONE DEJIMA
Company Introduction Video
Outline
Company Profile
- Company name
- ONE DEJIMA Co., Ltd.
- Address
- 1-1 Onouemachi, Nagasaki City, Nagasaki Prefecture 850-0058
- info@one-dejima.com
- Representative
- Representative Director Naoto Toyama
- Established
- December 2023
- Capital
- 100 million yen
- Shareholders
- Business contents
- Subsidiary and agency management, market studies and information analysis, human resources support
Office
View the office in 3D
ONE DEJIMA was established in Nagasaki and recently celebrated its first year of operations.
With the support of ONE’s headquarters in Singapore (GHQ), our local partners in Nagasaki, and the dedication of every team member, we have steadily expanded our scope and continue to grow as a vital part of ONE’s global network.
Even within the ONE Group, we are aware that our presence is not yet fully recognized.
To commemorate our first anniversary and increase awareness, we created a company introduction video.
The video showcases how ONE DEJIMA was established, the core operations entrusted to us by GHQ, and the dynamic team driving our daily work—all set against the beautiful backdrop of Nagasaki, a historic gateway to the world.
As a Knowledge Process Outsourcing (KPO) hub supporting ONE’s core operations, we are committed to creating greater value together with our colleagues around the world.
Through this video, we hope to share what kind of organization ONE DEJIMA is and the future we envision.
We also hope it will inspire new colleagues to join us in taking on the next challenge.